Sheet-piling.



G, ZISTER.

SHEET FILING. APPLICATION FILED SEPT. 8,1906. RENEWED JUNE 4, 1909.

Patented Aug. 2%, 19 09.

gen of the United States,

poses for which snea er ts cn'icaea'nnrvors.

snares-reams.

Specification '0: Letters Patent.

Application filed September 8, ms, Serial Ne. 3333M. B/tkIhfiWvBdJEZfi-, 1MB. Serial No. coarse.

To all whom it may concern:

Be it known that I, Gannon Zrsrnn, citiresid-in'g at Chicago, in the county of Cook and State of Illinois, have invented new and useful Inn ro'venisnts in Sheet-Piling, of which the to lowing is a specification.

This invention relates to improvements in metal sheet piling for use in the construction of sea-walls, docks levees, and all other purthis class of piling canbe utilized. l

The general object of my invention is to provide sheet pilin sections or members whereof the interloo g features necessary for holding the sections together when as.- sernbled, are made integral with the sections, which are identical with one another in sec tional form. Thus the employment of sepa rate interlocking devices mechanically secured to the members, is dispensed with.

The special object of my invention is to provide a'sheet piling structure the members of Which are positively and rigidly inten. locked, against relative or angular movement of any kind, after assemblage.

To this, end my invention consists in providing individual piling sections having the conformation hereinafter described.

Referring to the drawings, Figure 1 is a plan or end view of a piling section before the respective edges are turned inward to form the required interlock. Fi 2 is a plan or end view showing a number of coihpleted sections interlocked. Fig. 3 is an elevation of the same. Fig. 4 is a plan or end view of a modified form; and Fig. 5 is an elevation of the same.

The preliminary step in the manufacture of my improved piling is to roll the web sections or members A substantially flat with the -respective edges and acent part upset or thickened as shown at a. The thickened 'edgeportions are formed on what may be edges are bent'inward in the direction of' each other, bringing the'intnrned fviart into a plane approximately parallel to t e hotly oi the web and forming interlocking hoo'l-edgea 7 as shown in Fig. '2.' In this position the intnnned edges stand away tram. the body of the web or plate and provide dovetailed grooves 8 the of each The contour of the inturned edges correspond to the shape of the grooves 8 and form. a dovetailed interlock when the sectinns are assets-sled, ha a wall strnct-are, as

shown in Fig. .2.

The sections email-enact du licates of each other but far the tear ose oi escnigation the reference letter B wi be used on the middle section shown in Fig. When the sections are assembled in practical use they are telescoped together endwise and ar ranged alternately, that is, the backs of the sections A and B are on opposite sides in the Wall which order of arrangement is continuone in a structure.

It. will be noted that the sections, though, assembled cndwise are interlocked cdgewise and in the operation of driving cannot be displaced, as the thick rounded edge cannot be withdrawn through the narrow contracted part 9 of the grooves 8.

Figs. 4: and 5 show a modified form in that the interned locking hook edges stand at right angles with reference to the body of the piling sections. The same reference characters are employed in the modifications.

will be suc that the sections will go to ether loosely so that they may be assemble with facility and easily drawn out when used in ten orary structures.

It aving thus described my invention, what I claim is- 1. in sheet-piling, a section consisting of a body or web having its edges turned inward to form an interlock, said turnedin edges gradually growing thicker in an outward direction.

2. A sheet-piling section consisting of a metal plate or body having its respective The progortions of the interlocking edges- Patented Aug. 2st, 1909..

edges turned inward to form an interlock with a duplicate joining section, said turned in edges gradually growing thinner from the extreme ed e inward and vanishing in the plate or be y part.

3. A sheetpiling section, consisting of a fiat plate or body having interlocking hoolredges formed thereon, said hookedges being thicker than the plate-part and graduallygrowing thinner from the extreme edgoiin: ward. I I

1%. sheet piling structure composed of a pile sections.

web-para having its aexiei of seotiens, each having banked edges of dovetail section, the gmmres within smd. hooked edges being of dovataii form and the dQVeta-il edges fitting wit-his the grqeyes formed by the hooked edges of the jommg 5. A sheetilin sesfion, sonsisfing 0f :2. (I J I web-part having as espesm c izurnem face 01' 116 Wfib 1 inward amfie i Wlth time part am separated by an ig'xierver ing spags, said space sorrespondir-ag 1.11 011611112 t0 {me contour of said intumed edges amd forming an interloak permitting cf end'wise separation. only;

6. A sheetpi ing sec-Mun, consisting nf inward an intumad Ed 30 a the 1 cv am 255 mated Wb-fbiiit by 5. 1819562 geniany eniargiiig iii ward and adayted 00 receive 01w correspond ing fidg of a oining section.

7 111 sheet-piling, a piiz'ng sectien navilg' its respfictive edges turned inward paralle to the Web-part and leaving 5m. ixltarvgning space, said inturned edgas graduaily thick ening outwwrd forming a rounded do'vemfl, mid intervening space having aniline) correspondingto the rounded dovetaii edge in revefse, and a duplicate joining ile 'sec tion loosely interlocking therewith 111 form ing a. continuous wall structure.

in testimnny where'avf I a'flix my signature, in presence of two subscribin wl'tmsses.

' GEORUE ZISTER. Witnesses:

J. Doxmrusem, (-3 1E. (3311312011. 

